. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. 161 PELVIS. dorsally (/). The pubcs (d) are directed obliquely backwards with very short sym- physis (/), and the ilio-pectineal spine (//") is very large. The pelvis is altogether massy and large, with long sciatic notches and con- siderable obturator foramina. Fig. Pelvis of the Cape Ant-eater, side view. In the great American Ant-eater, both the ilia and ischia abut closely on the sacral trans- verse processes, presenting a faint suture at the line of junction. The pelvis is proportion- ately smaller and li
. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. 161 PELVIS. dorsally (/). The pubcs (d) are directed obliquely backwards with very short sym- physis (/), and the ilio-pectineal spine (//") is very large. The pelvis is altogether massy and large, with long sciatic notches and con- siderable obturator foramina. Fig. Pelvis of the Cape Ant-eater, side view. In the great American Ant-eater, both the ilia and ischia abut closely on the sacral trans- verse processes, presenting a faint suture at the line of junction. The pelvis is proportion- ately smaller and lighter, and the processes and spines much less marked than in the Cape Ant- eater. The lumbo-iliac angle in the Ant-eaters is 140°, the ilio-ischial 140° ; and the ilio-pubic is reversed, and about 155°. The Manis possess pelves of the same ge- neral heavy appearance as the American Ant- eater. The ilia and ischia are closely approxi- mated, but not ankylosed to the sacrum. The symphysis pubis is short and not joined by the Lschia, and the pelvic openings comparatively small. In the foregoing Sloths and Edentata, and in some of the Rodents, we have remarked the tendency of the anterior symphysis to become shorter and more imperfect by the absence of median union of the ischia, and that this is accompanied by a corresponding increase of the bond of union between the sacrum and ilio-ischian elements of the pelvis, by a closer approximation or ossification of their uniting ligaments, give greater firmness to the pelvis as its anterior connection fails. In the Insectivora and Bat tribe, this separa- tion of the innominate bones is increased, and the pubes also fail altogether, in many in- stances, to meet in the median line. By the classification of animals according to their pelvci development, which is here adopted, these tribes are placed much lower than their general osteology allows, in the general classi- fication commonly given by authors, and are allied more closely
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